Improvement in lubricators for machinery



` mamma asn/HTH. mprovment in Lubricatorsfor Machinery.

Patented May 23,`1871.

UNITEDSTATESl PATENT OFFICE'.

` GEOEGE E. sMiTn, OE EITOHBUEG, MASSACHUSETTS.

l MPROVEM ENT4 IN] LUBRIOAORS FOR MACHINERY.

o`.Specification` forming part of Letters Patent No. ll5,247, dated May 23, 1871.

To all wltont it may concern:

`Be it known that I, GEORGE E. SMITH, o 3

Fitchburg,in `the county Oi' Worcester and .Stateof Massachusetts, have invented certain Improvements in Oil-Cups Or Lubricators, `of which the followingis a specification.

1 This invention relates to that class of devices known as Flubricators for'ma'chineryf7 o and it consists in providing the Oil4reservoir with a tube or' passage extending from or about the top of the same,and` communicating with theshank Offthe Oil-cup, by which means lubricatingiluid is' Supplied to the journal or bearings of pulleys and other desired devices.

Figure l is a sideelevation of the oil-cup or A lubricator of my invention. Fig. 2 is a horiv Vwith,thesection represented in Fig. 3. The Oil-cupis made of brass or other metal,

of Spherical oir-elliptical form, having an oilchamber, g, and small tube or passage h, lead' ing `from oil-chamber at c, and passing near the eircumferenceofthe oil-cup, and communicating with the spacein the neck of the oilcupl at u. lThis space leads to the shaft or `bearing upon which the `pulley or other machinery revolves.' `In this space there is tted a piece of sponge,z, or other porous substance.

` By increasing or diminishing the size or de- `gree of porosity ofthis substance the flow of `the Oil maybe regulated as desired. The cap 7c is screwed tightly to its place, closing the opening through which the oil-cupis iilled.

These oil-cups can be cast with the chamber g and curved groove h, To facilitate `in manufacturing, they may be cast hollow through the entire length, and communication stopped between the Oil chamber and space in the neck of Y When in use, the oil-cup is screwed tightly to the hub of the pulley L or other machinery `to be Oiled, its position being shown in Fig.

3, vthe arrows indicating the direction the pulley revolves and the course the oil takes to go from oil-chamber g to the shaft or bearing to be Oil ed, the centrifugal force having the tendency to throw the oil to the Outside of the oilchamber, and the revolution of the pulley causes the Oil toypass through the passage h and porous substance z', where its quantity is regulated. The Oil-cup should be placed in the pulley, So that the Oil will flow in a direction opposite to the revolution ofthe pulley.

1. rlhe tube or passage h, leading fromv or about the top of the oil-cup, and communicating with the Space in the neck or shank of the same, arranged and operating substantially as described.

2. The @i1-@np provided with theiongimdis :nal passage h, with its two openings, as describe.d,in combination with the porous Substance t', when the same are constructed and arranged to operate together as and for the purpose set forth.

l GEORGE lSMITH.

Witnesses:

NATHL. WOOD, o El. DOWNE. 

